Proudly Serving The Erie And Niagara County Areas
JOIN OUR TEAM
WORLD-CLASS PRODUCTS. EXPERIENCED, LOCAL PROS.
Career banner Mobile home banner

Back to Blog

Adding Insulation Over Old Layers

Does your home need more insulation? Most homes already have layers of insulation in attics and walls. Perhaps you’re wondering if you should remove your current insulation or just add new layers over the old. If your question is “Can you put new insulation on top of old insulation?” we have an answer for you!

In short, yes—you can install new insulation over old insulation.

Contact us to start your project, or keep reading to learn more about adding insulation to your home!

Can I Add New Insulation Over Existing Layers?

According to ENERGY STAR®, you can put new insulation over old insulation, “unless it is wet. If it is wet or appears that the insulation has previously been wet, you should look for the cause and repair the problem…” Wet insulation is problematic, as it can lead to mold, mildew and sometimes the rotting of ceilings or roof rafters.

Although insulation professionals will handle the installation for you, here are some things to keep in mind about removing old insulation and installing new insulation over old insulation, according to ENERGY STAR:

  • “Faced” insulation should not be placed on top of existing insulation in the attic. Any new batt or roll insulation installed over existing insulation in the attic needs to be without a vapor retarder (face). The vapor retarder on top of or between layers of insulation can trap moisture. Any existing batt or roll insulation in the attic should have the facing against the attic drywall floor or no facing at all.
  • Batt or rolled insulation or blown loose-fill insulation (fiberglass or cellulose) can be installed on top of old insulation.
  • Insulation should be rolled out perpendicular to the joists—and unfaced rolls should be used.
  • Rolled insulation should not be tacked down. The R-value can be reduced if the insulation is squashed or flattened.
  • Any vermiculite insulation found in your attic should be tested. If the test reveals that harmful chemicals are present, the vermiculite should be removed by a certified professional before installing more insulation.
  • It’s recommended to air seal before installing insulation since air leaks can hinder the performance of insulation and significantly reduce the energy efficiency and comfort of your home.

The most important thing to keep in mind is that you don’t have to worry about all this. Professionals will be able to answer any questions you have—and handle your entire home insulation project.

If you live in the Buffalo, New York area, Town Building Systems can help. We have experience installing all types of insulation and can help you with your project. Contact us today to learn more about our services or if you’re ready for a quote!

OUR REVIEWS

quotation
They were quick, efficient and very easy to talk to. These guys deserve a raise. Awesome job!! Joseph M.
They were very professional about the job and made sure that everything that I wanted done was done they did some great work, and I would highly recommend them. They also cleaned up very well after they were finished ... Gregory L.
Outstanding people, outstanding customer service! I highly recommend Town for any job or service that you need! Wendy S.
SEE ALL REVIEWS
WE CAN HELP GET A QUOTE

Get a Quote

Translate »